NEW YORK In a small studio at CBS News headquarters, historian Douglas Brinkley is watching a piece of history, a black-and-white tape of his latest subject, Walter Cronkite, who's about to tell the nation that President Kennedy has been assassinated.

Election watchers won't have to wait for polls to close in the West to know how things are going. The first clues will come early, when voting ends in Georgia, Indiana and Virginia. If Democrat Barack Obama wins any of the three, he could be on his way to a big victory, maybe even a landslide.

Election watchers won't have to wait for polls to close in the West to know how things are going. The first clues will come early, when voting ends in Georgia, Indiana and Virginia. If Democrat Barack Obama wins any of the three, he could be on his way to a big victory, maybe even a landslide.

Michael Phelps' coach calls him "the motivation machine." "He's motivated by failure, he's motivated by success, he's motivated by money, he's motivated by comments people make," Bob Bowman says. "He can take just about anything he comes across and turn it into some kind of motivation. That's one of his greatest attributes."

Many Indiana residents will do something this weekend they haven't done in decades: change their clocks. More than 30 years after most of Indiana decided that it would stay on Eastern Standard Time year round, all Hoosier clocks will follow most of the rest of the nation and spring forward one hour for daylight-saving time.

The Indianapolis 500 will start one hour later this year because of Indiana's switch to daylight-saving time. Most of the state, including Indianapolis, previously observed Eastern Standard Time year-round. But starting in April, when daylight-saving time begins, Indianapolis will join the East Coast on ET for six months.

There aren't enough hours in the day to watch all the Winter Olympics coverage that NBC and its cable partners are serving up. Wha to do? "We are reinventing the clock," said David Neal, executive producer of NBC Sports.